A forum for owners of Yamaha TTR250 trail and enduro bikes!

TTRfan · Super Guru

Lightweight, rust proof, quiet after-market exhaust for the TTR? Try a Motad!

domski1 · Senior Member

RE: Lightweight, rust proof, quiet after-market exhaust for the TTR?

TTRfan · Super Guru

The investment in getting Motad to design and make such a small number means that we will be selling them to recoup costs and, hopefully, make a few bucks to subsidise my penchant for doing expensive things to my TTRs wink

Price to be decided once we have definite costs and have seen and tested the finished article. The aim is to beat the price for the FMF Q4 - and be quieter and better built biggrin

Brian

Rangoonruns · Member

Bloody hell

I live approximately 4 miles from walsall you could have come in for a brew! I too would be interested in a quiet st/st exhaust, at right price of course.

TTRfan · Super Guru

Rangoonruns wrote:
Bloody hell

I live approximately 4 miles from walsall you could have come in for a brew! I too would be interested in a quiet st/st exhaust, at right price of course.

Kind offer - would have been a lot nicer than the motorway brew!

Motad are making good progress. Had a phone call today to say that the exhaust on the newer TTRs (with the offset outlet) is over a decibel louder than the earlier one with the central hole confuse

Important as we challenged them to match the dB of the standard exhaust.

Got a road tyre to send off to them tomorrow to fit to the test TTR as the dyno didn't like the trail tyre cry

Brian

BM Steve · Guru

They Sound like the good stuff, My bike came with a staintune exhaust fitted and thank god also came with the stock exhaust as a spare, so my first mod was to replace the staintune POS with the stocker, instant peace, ran better, and no one knows I'm around which is important where I live surrounded by National Parks

I'd be interested as well if the freights not to much, that will be the catch I guess, but maybe not, the staintune I have only weighs about a kilo or so

Steve

TTRfan · Super Guru

Hi Steve

Noise is also the killer on the trails over here in the UK. If the locals can't hear you, they don't know you are there - hence our quest for a quiet after-market system!

The weight will be an issue but not the determining factor.

For instance, these guys weld fine stainless steel mesh to the inside of the outer exhaust shell to keep down resonance and help with sound absorption. Extra weight but worth it methinks.

It's that sort of attention to detail that gives me confidence they will produce what we want in terms of a value-for-money rust-proof replacement with the same decibel level as the standard pipe - I hope that isn't "famous last words"!

If they can do that and the exhaust is lighter than standard then we will be pleased wink

Brian

Aidan · Senior Member

I would be very interested I'm running an aftermarket exhaust, not sure what brand. But it's to noisy. Depending on freight I think ur onto something

Dullthud · Veteran Member

When I was despatching Motad were always the exhaust of choice. No rejetting. No plod worries. No MOT worries. And, as you say, they're made of stainless and were invariably happy left well alone for ever. So even if they just make a copy of the original out of stainless it will be lighter and will last longer. I look forward to the results.

Andy

Fixer · Member

Hi Folks

Please be aware that this is a photo of the prototype not the finished article.

The brief to Motad was that the silencer had to be as quiet as the original without a loss of power. The bike will be dyno'd this coming week.

The short tail pipe is to deflect the hot exhaust gas away from the number plate and the indicator.

It has a guard on the side of the silencer to stop the side panel touching.

domski1 · Senior Member

Wow that was fast work! Personally I am not to sure on the end pipe, I know it will need something like that to keep the noise down and keep the hot gasses away from the plastics but it would be great if there was a way of tidying it up a little. Possibly just me though, great work nether the less!

BM Steve · Guru

Any Idea what the weight saving is yet ?

Steve

Fixer · Member

Weight saving is not on the agenda. If it is lighter then so be it. THe primary concern was a replacement silencer, made from stainless that would be sturdy and quiet...and a lot cheaper than the Yamaha one that is no longer available!

TTRfan · Super Guru

Fixer wrote:
Weight saving is not on the agenda. If it is lighter then so be it.

It is my fault for putting "Lightweight" in the thread heading Andy - sorry disbelief

But....... I live in hope wink

Brian

Fixer · Member

The important thing is that this silencer and pipe are 100% stainless steel and therefore should be the last exhaust you will need to buy.

No more rotting out at the joint! smile

Fixer · Member

The first batch of Motad Silencers with link pipes will be available after the 9th December.

domski1 · Senior Member

Have you got a price yet, I take it the link pipe just links to the standard front pipe. ?

TTRfan · Super Guru

domski1 wrote:
Have you got a price yet, I take it the link pipe just links to the standard front pipe. ?

Sorry not to have replied before.

A batch of bespoke TTR stainless steel exhausts have now landed in Devon. Photographs etc to follow along with prices.

There is a rumour that the new exhaust showed a useful power gain on the dyno compared to the standard box with only a tiny increase in db level wink

Brian

domski1 · Senior Member

Looking forward to seeing the exhaust and price, my pay pal is ready!

Livotlout · Member

Sounds good, polished up well except for deformation where internal baffles are welded, fits perfect.

Alec

-- Edited by Livotlout on Saturday 7th of January 2012 08:12:26 PM

TTRfan · Super Guru

Crikey - that came up well! What was your polishing method??????

Livotlout · Member

Method

TTRfan · Super Guru

Lightweight, rust proof, quiet after-market exhaust for the TTR?

TTRfan · Super Guru

Just fitted one of these to my 325 and it fitted well and sounds great.

Made it a bit perkier as well which bears out Motad's dyno readings. Had to use a bit of gun gum on the silencer to header joint to get a 100% leak proof seal.

I haven't got any of the stacatto noise Andy mentions in the advert. The only sound is out the back as it should be wink

Brian

TTRfan · Super Guru

I chatted to Andy about the new silencer today and told him that I had tried the Motad on both the 325 and a 250 and, once properly sealed at the join between silencer and header pipe, there was none of the "staccato" noise he was worried about.

He asked if I would ask for feedback from anyone else that bought one of the new Motads particularly regarding this noise.

Is yours OK Alec?

Brian

truslack · Veteran Member

Any comparison figures from the bathroom scales?

TTRfan · Super Guru

truslack wrote:
Any comparison figures from the bathroom scales?

They are 1kg lighter and the dyno showed a 4% increase in BHP biggrin

davecambo · Senior Member

cant ask for better than that guys well done.

dfaz · Veteran Member

I am well happy with the exhaust ever so slightly noisier when revving hard but the bike didnt rev so freely before.The noise is just different to the original a little raunchier if thats the right word but certainly not anoying like some intake noise.I certainly would recomend it to anyone else BTW the exhaust on my bike was fitted without any exhaust paste and sealed first time I just made sure the clamp was over the gap and tightened it up.

TTRfan · Super Guru

davecambo wrote:
how much are these shipped to Aus?

I don't think Andy is a regular visitor on this forum. Best to make direct contact through the contact details on his web page here

Brian

ttr raid · Veteran Member

just read through this subject and all the post's, so am i right in thinking that if i am in the uk and send you £179.00 you will send me a slip on end can that will give me 4% more bhp which equates to 1bhp. is it me, does that not seem a lot of money for such a small performance gain or am i reading the post's wrong ?

TTRfan · Super Guru

ttr raid wrote:
just read through this subject and all the post's, so am i right in thinking that if i am in the uk and send you £179.00 you will send me a slip on end can that will give me 4% more bhp which equates to 1bhp. is it me, does that not seem a lot of money for such a small performance gain or am i reading the post's wrong ?

Hi there

If your original TTR silencer is on its way out then it is a bargain way of replacing it with a 100% stainless steel sytem especially if the alternative is a new standard silencer from Mr Yamaha or a new FMF wink

Seriously, it won't appeal to everyone but there will be situations where it is a worthwhile purchase.

Brian

PS I am not the seller - Andy is - see above post.