New Stealth TT build…

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  • New Stealth TT build…
  • trail_rat
    Member

    what are the wheels ?

    headfirst
    Member

    Leave steerer as it is and use it as a chin rest?

    trail_rat
    Member

    the bars are where they need to be or where you would like them to be…..

    that looks comfy for about 5 minutes – even with me being flexible as hell….

    Premier Icon mrblobby
    Subscriber

    I went for the un-decaled Planet X 50/50 carbon tubs. Pleased with them. 608g and 866g according to my kitchen scales. Will be swapping the rear out for my powertap hub with an aerojacket initially, then a proper disc at some point.

    Premier Icon wwaswas
    Subscriber

    there’s only 3cm of seatpost in the frame? or max of 30cm out?

    Good to see the patio being protected with a towel, abrasive things bike tyres πŸ˜‰

    Looks fast standing still! Why not put another rest on the steerer for your chin πŸ™‚

    Premier Icon mrblobby
    Subscriber

    the bars are where they need to be or where you would like them to be…..

    that looks comfy for about 5 minutes – even with me being flexible as hell….

    The bars may come up a little bit, but bars and saddle are roughly where I want them. It does look a bit steep but it fits me. My summer road bike isn’t too dissimilar and that’s fine for several hours!

    Premier Icon mrblobby
    Subscriber

    I like the chin rest idea πŸ™‚

    Good to see the patio being protected with a towel, abrasive things bike tyres

    No tyres on at the moment and I didn’t want to scuff the nice carbon rims!

    trail_rat
    Member

    wwaswas clearly missed the part about no tubs fitted….

    which means abrasive patio on expensive carbon ….

    retro83
    Member

    Looks nice.
    For the uninitiated, how much faster are they along the flat than a normal road bike (for a given effort)?

    Premier Icon mrblobby
    Subscriber

    For the uninitiated, how much faster are they along the flat than a normal road bike (for a given effort)?

    I’ll let you know πŸ™‚

    Get a good position and all the other aero clobber (suit, helmet) and can be a good 5 to 10 mph quicker. Really depends on conditions.

    Premier Icon wwaswas
    Subscriber

    It’s probably best to look at it as ‘number of watts required to maintain a given speed’?

    Premier Icon mrblobby
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    It’s probably best to look at it as ‘number of watts required to maintain a given speed’?

    Yeah, that was a guestimate based on riding at around my FTP wattage.

    bikebouy
    Member

    Looks ferkin uncomfortable πŸ˜†

    Glad I’m not following on behind you, pfftttt.

    Premier Icon mrblobby
    Subscriber

    It’s a TT bike so comfort is low on the list of priorities πŸ™‚

    Premier Icon mrblobby
    Subscriber

    My almost finished new Planet X Steath…

    Done fairly cheaply for a TT bike thanks to planet x’s current bargain deals and my spares bin. Steerer obviously still needs cutting, and once I’ve faffed about getting the setup right the stem will be changed for something that doesn’t weigh a tonne. Also rear wheel will be changed for a disc soon. That said, without tubs, chain, cassette and pedals this is 15lbs 12oz.

    Happy with the Medium size too. At 6ft I did have a worry when I saw that I only had 30cm of seatpost to play with but it looks like I’ll have it at about 27cm. And the bars are about where I want them.

    Can’t wait to get out there and ride it now πŸ˜€

    pingu66
    Member

    Shed and fence need some attention.

    Ooh nice bike as well.

    Premier Icon mrblobby
    Subscriber

    Bikes get much more attention than the shed!

    It’s a TT bike so comfort is low on the list of priorities

    You haven’t done this before have you!?

    comfort is key for the ability to put out high wattage constantly.

    unless you’re Mr Spaghetti, a drop that large may only be for short 5 mile sprint tt’s. good luck on 25’s!!

    Premier Icon mrblobby
    Subscriber

    Ah that’s only an hour πŸ™‚

    The bars do actually have to come up quite a bit. Stem on there is set to about -30 and I’d actually have it closer to zero. Most of the measurements are based on my road bike in TT mode which has been fine so far. I’m not worried. I’ll admit that it does look a bit odd but then I suspect I have long limbs and a short torso as the drop from saddle to bar is pretty huge on my road bike too.

    Premier Icon mrblobby
    Subscriber

    A quick update in case anyone is riveted by the saga of my bike fitting. Just spent about an hour tweaking with the position and taking photos to see if it looked reasonably aero-ish (I can see myself being tempted by a wind tunnel session!) Seat went forward about 10mm on the rails. Stem adjusted to about -5. Shall swap it for a fixed one that’s about that and about 10mm shorter. All day comfort πŸ™‚

    Only thing I’m not too happy with is the fitting of the garmin speed/cadence sensor. Want it to sit just about where the fin on the chainstay is and that’s just an awkward fit. Anyone got a good solution to this?

    glupton1976
    Member

    That position looks bloody horrendous. Good luck trying to get some good lung volumes on the go.

    warton
    Member

    It’s a TT bike so comfort is low on the list of priorities

    If you’re not comfortable, a 25 becomes living hell.

    Premier Icon mrblobby
    Subscriber

    Seriously, the position is fairly similar to my road bike with clip ons in terms of drop from saddle to bars, which I had been getting on with just fine. If anything I think it’s better for lung volume as the saddle is further forward due to the steeper seat tube. Time will tell!

    I was being a little flippant with the comfort comment πŸ™‚

    Edit: As an example here’s my turbo setup, there’s a good 20cm saddle to bar, and I’m happy on that for hour after mind numbing hour…

    Double edit: Have you guys all got really short shoulder to elbow measurements? I do have long monkey arms.

    glupton1976
    Member

    Edit: As an example here’s my turbo setup, there’s a good 20cm saddle to bar, and I’m happy on that for hour after mind numbing hour…

    You don’t ride your road bike with your elbows on the handle bars though do you?

    trail_rat – Member
    what are the wheels ?

    They’re the big round black things with the metal spokey starfish bits.

    Premier Icon mrblobby
    Subscriber

    You don’t ride your road bike with your elbows on the handle bars though do you?

    I do ride with my forearms fairly horizontal most of the time so probably not too far off. Anyway, shall use it for it’s intended purpose soon enough πŸ™‚

    trail_rat
    Member

    i didnt ask where ….. i asked what ….

    nice try though.

    glupton1976
    Member

    I do ride with my forearms fairly horizontal most of the time so probably not too far off. Anyway, shall use it for it’s intended purpose soon enough

    That’s not what i asked. You probably do not steer your road bike with your elbows.

    Premier Icon garage-dweller
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    Looks mental to me but then i have a gut, a long body and t-rex short arms. πŸ™‚

    TiRed
    Member

    Please flip that speed sensor down if it can possibly fit inside the chainstay. Offends my purist sensibilities. Looks dreadfully uncomfortable to me.

    trail_rat
    Member

    Please flip that speed sensor down if it can possibly fit inside the chainstay. Offends my purist sensibilities. Looks dreadfully uncomfortable to me.

    it cant

    i had to fit mine in the same place with sensor up … fannied about with it for ages – either it hits the crank and clears the spokes or hits the spokes and clears the crank

    you can mount the whole unit underside but it looks even worse .

    damo2576
    Member

    I really need to see you on that!

    richardk
    Member

    Given how far back your saddle is, you may have been better off with the large frame to get the extra length in the top tube. You’d have been more over the bottom bracket then with the chance of a more open position (not scrunched up). Not just saying that because you didn’t buy mine either πŸ™‚

    By strange coincidence, it looks like you may have bought my old road bike… I’ve never seen another one like that Puegeot. Is it a 56cm frame? with Campag 6 speed?

    Premier Icon mrblobby
    Subscriber

    Please flip that speed sensor down if it can possibly fit inside the chainstay. Offends my purist sensibilities. Looks dreadfully uncomfortable to me.

    Yes offends me too when I see it flipped up! As trail_rat says though, it doesn’t fit. I think you can get separate speed and cadence which apparently are a better fit.

    Given how far back your saddle is, you may have been better off with the large frame to get the extra length in the top tube. You’d have been more over the bottom bracket then with the chance of a more open position (not scrunched up). Not just saying that because you didn’t buy mine either

    I really wish I’d posted a photo AFTER I’d done a bit of proper fitting, other than just a rough tape measure job. Saddle has gone down and forwards, bars have come up quite a bit!

    I really need to see you on that!

    There is usually someone taking photos at our TTs so I should be able to oblige πŸ™‚

    By strange coincidence, it looks like you may have bought my old road bike… I’ve never seen another one like that Puegeot. Is it a 56cm frame? with Campag 6 speed?

    That pug was my second proper road bike. Brought from new at Alf Jones’s cycles in Wrexham circa 1987. I think it is a 56, but Shimano 105 7 speed.

    irelanst
    Member

    Before cutting anything I would do some power measurements if I were you.

    When I was at uni I managed to blag some time in a wind tunnel. I could get my back very flat which lowered the drag but it also dropped the power quite a bit mainly because it was difficult to keep my arse on the saddle, all the weight was going through my arms. By lifting the front end it put more weight onto the saddle which felt more solid and I could output more watts which overcame the increase in drag. Also because my back wasn’t as flat I found that angling the tri-bars up so my hands were level with my chin helped reduce drag and was better for me at realistic speeds (flat arms was better at 40mph+), all years before Floyd Llandis started doing it!

    Non of it helped me crack 20mins for a 10 even on V718 when the container ships were unloading though!

    trail_rat
    Member

    cant see your pad width from the angle of photo but another thing i see alot is folk trying to lower their frontal area by putting the pads close as possible – I have noticed and through experiance noted that as long as they are within the confines of my hip bones im not creating extra drag BUT i am opening my chest up to allow more air into my lungs.

    Even the old school guards stopped trying to lick their front tire years ago once it was proven that it wasnt the fastest way.

    Premier Icon mrblobby
    Subscriber

    Thanks guys. I’ve done a fair bit of fiddling with position on the turbo with power and have a pretty good idea of what works and what doesn’t for me. Interesting comment about angling up the tri bars, may give that a go.

    Trail_rat, I’ve actually moved the pads out quite a bit from when I first started out. There’s about 18cm between the middle of each pad which seems to work better for me (though I do have quite narrow shoulders and hips.)

    Premier Icon flange
    Subscriber

    Hold up – that seat post is actually in position? I thought it was just put in the frame in a ‘I’ll put it here so I don’t kick it round the floor of the garage’ style. You’re actually going to ride it like that? Man alive, fair play to you!

    Apart from the position it looks lovely. I had a Stealth for a bit and first time out (literally the first time I’d ridden it) did a PB for a 10 (22.01 in case you’re asking). That was with MTB lid and SPD’s…..I wasn’t particularly popular with the TT old guard…They’re a really nice bike and noticeably quicker than a road bike

    Is that a disc wheel in your Turbo bike?

    Premier Icon mrblobby
    Subscriber

    I really must post a photo post-tweaking! Seat has gone down and forwards, bars have come up. Seatpost was set to min insertion in that photo, it’s now gone down about 35mm.

    The turbo bike has a powertap wheel with an aerojacket cover on it that I had been using for TT duties. I’ll get a proper disc at some point.

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