The XR-1 project is going ahead in a steady and constant way. As you can see in the photos, the construction of the first chassis is very advanced. We still must weld the shock mounting point and some other details.
In the following days we will start with the bike assembly. We look forward to see it standing.. and to test ride it!
As always you will find larger photos on our Flickr gallery.
As with most people who have seen this project, still very excited to see the eventual outcome. Random question in regards to cooling. I know that high performance HD motors struggle with cooling to the rear cylinder, was there any thought given to rotating the engine up in the rear and down in the front to give a little more surface area for aircooling? Not sure if it is a feasible design solution, added complication to design and build versus cooling gained, but just looking at your frame more and more it popped into my head. Would be curious about your thoughts on this. Thanks.
Hi Andrew,
If you look at a Buell XB, you will find that you can not see the rear cylinder, it is completely surrounded and hidden by the chassis (and almost the same thing with the front one). In the XR-1 both cylinders (and heads) are completely seen (there is not chassis around), so we are sure that we won’t have any cooling problem. Anyway we will check it in our tests once the bike is built.
Agree with David regarding the cooling issue. The Buell XB chassis/tank surrounds the rear cylinder, though the configuration helps to “duct” cool air from left side scoop, with hot air exit through the rear cutout near shock body. That is also where you find the XB “hair dryer” fan that helps with hot air transfer.
The open design of the XR-1 should help with heat transfer for the rear cylinder, but it is possible that an auxiliary air/oil cooler will be recommended or required, similar to the XB and XR1200.
Still keeping a close eye on all updates! Very excited to start seeing the end product come together. I can not wait to get my hands on one of these beauties!! Keep up the fantastic work.
Will the smaller engined XB9s work with this kit?
go ahead and mail this to me. im foaming at the mouth for it.
Hi I like the Bott XR1 something I would like to do, do you know when it would be available and how much the kit will sell for, I also would be interested in just the Frame.
Thanks.
Mike
[quote]Will the smaller engined XB9s work with this kit?[/quote]
Since XB9 and XB12 motors share mount points, there is likely no problem using either option. Even case-bored project motors should work, as long aa upper motors mounts are kept in original location.
For my own XR-1 project (if the kit or frame becomes available) the motor would be my XB9, either as-is or as 1169cc build, normal CR and OE top end, maybe a bit of head work.
FWIW- there’s lots of good XB motor info to be found in BadWeb and other message boards.
For my opinion the frame is not stiff enough.
Hi Benedikt, we will see it very soon, once we start testing the bike! 🙂
Hey Guys!
I really like that kind of work .. are you so kind to tell me what material you are using?
Im currently doing some CAD works for a 25CrMo4 steel frame for a Yamaha MT01 Engine.
Best Regards, Martin