PTT Laguna Seca 4/27

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panibadboy said:
No one in paddock uses this crap
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You don’t say… Might not be clip ons but their parts are used in the paddock

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Paul G said:
They posted a vid of you

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Not me but the guy is definitely fast. Was doing 1m56s on a bike w less than half the cc’s. I think this was B session, not A’s (not to toot my own horn).

Average A pace was 1m35-40s with me being probably one of the slower riders in it at 1m48-50s. Though I wish I would’ve remembered to hit record on the GoPro for the last session. I finally got into the sweet spot for the front tire pressure and felt I could push and had a good rhythm. I’d anticipate maybe 1m45-46s. Sliding the front in Rainey’s was exhilarating to say the least 😳
 
A bit of an update if anyone cares...

Spoke to the seller of these AELLA clip ons and while they are supposed to be amazingly machined, they ultimately aren't significantly different from the OEM bars. The increased bar rise is offset by steeper bar angle. Basically, the position wouldn't change.

So what's the next best way to get height into the bars without running risers? The triple clamp. The OEM triple clamp is angled down from the steering head to the forks by 5 mm. I looked at what the factory team is running and it turns out they basically run a CNC'd plate as the triple clamp.

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If you just run a straight plate triple clamp from the OEM height you gain 5 mm. And if you decrease the triple clamp thickness, you can gain more bar height. This would help me gain about 1 cm of bar height. I decided to dust off my CAD skills and flex my pea brain a little and came up with this:

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Still waiting on quotes to see if this is realistic to machine. If it's under $500, it might be worth pursuing. It's probably overbuilt a bit. Increased the wall thickness around the fork tube and steerer by 1 mm from OEM. Will have to machine a new spacer too...
 
I wouldn’t expect any of them to change the bar height. Swap the bars to the other side? Ducabike do raised bars with a 6.5 drop.

What does Bautista use? He seems to manage and he’s not much taller than you…
 
spooky said:
I wouldn’t expect any of them to change the bar height. Swap the bars to the other side? Ducabike do raised bars with a 6.5 drop.

What does Bautista use? He seems to manage and he’s not much taller than you…
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Has that triple that I designed. That and a lower profile tank.

Less offset bars wouldn’t help my situation. Bars may be closer but they’re still too low to get my forearm over the tank. In fact, I’d bet they’d exacerbate things since the tank is higher at the midpoint
 
SuperDomestique said:
Less offset bars wouldn’t help my situation.
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I was talking about the drop - not the offset. Marginally more drop but raised, and offset looks similar from Ducabike.

Bautista doesn’t have the triple that you designed… You’ve no idea what he has. 🫣

Maybe you’d be better off with a smaller bike. If it wouldn’t be a Ducati then so be it. We’d miss you of course but it is what it is.
 
Quote to machine this is only $100. Definitely going to give this a go.

Bautista is 5'6" so about an inch shorter than me and uses what look like similar offset clip ons to stock. There's got to be a reason for this. I think this flat triple clamp is one way to help solve this positioning issue. 1 cm higher bars will make a huge difference.

I also followed @KarlKani's advice on raising the rear sets to max and will work on my knee flexibility (meniscal tear). Definitely feel more connected to the tank with the knees higher and can pivot around the tank better
 
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Got it mocked up and the part is in production. Worked out the factory dims and design features as best I could from photos and video I found. Their clamp is between 16-18 mm in thickness. I went with 19 mm for extra factor of safety. I didn’t go with chamfer at the front of the factory clamp because of the added cost to machine it, design simplicity, and safety. Threw it into some FEA software and there’s no significant stress concentration on torsion. It’ll be super strong under lateral loads because of the T-beam design. Will be machining it out of billet 6061 so there might be an added strength over the cast part (not sure what alloy is used but it’s probably A380).
 

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