Yamaha SR250 - A clean standard build

[cosworth]

As I was welding my stainless header last night, as much as I love fabrication, I would have preferred to just buy one.

[JadusMotorcycleParts]

Thanks for the support/interest.  I am just confirming some final changes then the exhaust headers will be ready for sale.  I will be able to sell them for around 145euro - which is around the price you would pay for a header for the SR400.  Except I personally know my supplier and the materials and processes he uses, rather than ordering from a factory on the other side of the world where I cannot control the quality or the materials 

[JadusMotorcycleParts]

Got some time in the workshop the last couple days and moulded up a fiberglass seat pan and started to shape the foam.  Eventually, once the prototyping is sorted and if it comes out any good, I will pay for some tooling to be made to make a small series production run of it.  In the beginning it will be very labour intensive to create the seats but I am still hoping to produce them for a competitive price

[Shawzie]

I dont understand the haters.  Are they just wanting to hate?  Or do they have a genuine concern for my safety when riding this motorcycle with a 16'' front wheel?  At the end of the day, we are talking about a bike with 239cc's and between 17-20rwhp depending on which model.  Really that dangerous?  I have seen many bikes with a 16'' front wheel, even race bikes.  Even down to 15''!  So I am sure it will be no problem    The front end of this try hard chopper (stock) has so much rake in it that dropping the front end and raising the rear will improve the handling capabilities anyway.  Also, if you are ever interested/wanting to check tyre comparrisons, check out this comparison tool.  It even has a visualiser which is really neat.  The diameter difference between stock and the new tyre are not much at all   

https://www.tacomaworld.com/tirecalc?tires=90-90r19-120-90r16

As for the spokes, it was a percentage calculation I did to get the right lengths and angles.  I messed it up once but then adjusted and ordered again.  Now they are perfect.  Thats the way R&D goes I guess.  I will be selling these spoke kits on a webstore soon if you are interested?  I could send you one of the first kits that I get?

I'm not against big tires at all. I think they look cool. And I agree. On a 20hp bike at best. What's the difference anyway. I have lowered the forks on mine about 2" and I completely agree it wakes it up a bit. I would be very interested in a spoke kit once available. Same with a fork brace. Anyway, great looking bike. Very interested in how it turns out

[cosworth]

Thanks for the support/interest.  I am just confirming some final changes then the exhaust headers will be ready for sale.  I will be able to sell them for around 145euro - which is around the price you would pay for a header for the SR400. 

I paid $90 CDN for a just a J bend of stainless from Lordco. After cutting it, welding it, polishing it, messing around with it....yeah $145euro is fantastic as long as the shipping isn't 200euro lol.

[zap2504]

I am just confirming some final changes then the exhaust headers will be ready for sale.  I will be able to sell them for around 145euro - which is around the price you would pay for a header for the SR400.  Except I personally know my supplier and the materials and processes he uses, rather than ordering from a factory on the other side of the world where I cannot control the quality or the materials 

Suggestion - contact MikesXS (http://www.mikesxs.net/) to see if they would be a distributor of your SR250 parts in North America since they are already an established organization with very good reputation.

[cosworth]

MikesXS only deal in the United States. They don't ship to Canada or Mexico. Not shipping to Canada is like saying "We don't ship to California." Shipping from America is sometimes double what is is from the Eurozone. And it is trucked by land...

MikesXS uses xs650direct.com as a Canadian distributor. They don't carry SR parts.

[zap2504]

"As a distributor" not THE distributor. It's far easier to hook up to an established retailer than try to create your own marketing channel. MikesXS doesn't carry SR250 parts either, but they do carry SR500 parts so it should not be a stretch. Maybe XS650 Direct would also expand their product line.

[JadusMotorcycleParts]

Interesting suggestion with MikesXS.  I have bought many parts from them over the years - many of the universal parts have been good for my projects.

I finished shaping up the foam of the seat and covered it with a thin sheet foam to smooth things over.  I like this shape a lot more than the last.  When I start production of this seat I will tweak it slightly once again - just some of the angles are not quite right.  Also saw a seat I like the look of so will take that picture to the upholsterer.

[zap2504]

I finished shaping up the foam of the seat and covered it with a thin sheet foam to smooth things over.  I like this shape a lot more than the last.  When I start production of this seat I will tweak it slightly once again - just some of the angles are not quite right.  Also saw a seat I like the look of so will take that picture to the upholsterer.

Did you give it a "test sit" for an extended time? It looks to me like the upper part that would actually provide the most support is fairly narrow and I would be suspect of the sharp transition angles on the sides.
See:
http://www.diymotorcycleseat.com/comfort.htm

http://www.diymotorcycleseat.com/modify_2.htm

http://www.diymotorcycleseat.com/modify_3.htm