Yamaha TRX850 owners

[R6_kid]

Described by some as "The thinking mans R1".

Who else has one? I'm looking for some advice for what tyres to get as I hear they can chew through them pretty quickly!

So far I've had Metzeller M1/M3's suggested, and was also looking at Bridgestone BT090's (can get second hand set cheap) or perhaps Conti RaceAttack/StreetAttack combo.

Thankfully the new steed has been blessed with Ohlins so that may help the tyres last a little bit longer, though the race cam, 2-1 race pipe and flatslide carbs are probably going to negate that.

[imdying]

BT90 is a 250/400 tyre... might get eaten alive.

TRX850s have a number of small problems that are well known. Hook up with the owners forum, they'll give you a little list to work through, and after that it should be reliable as :)

[R6_kid]

Haha good point! I'm already a member at trx850.motomaniac.net - I've bought and FZR250R dual projector beam headlight to fit when I pick the bike up next week.

I know about them having a habit of drinking oil, but as the bike is a japanese import it's hard to know what's been done to it so will have to start from scratch - I'll most likely do the 'big service' on it by the end of the year just for peace of mind.

[imdying]

There's something to do with air getting into the carbs that apparently is worth a look... can't for the life of me remember what it is... but reputedly it's common and a worthy mod... go forth!

[R6_kid]

There's something to do with air getting into the carbs that apparently is worth a look... can't for the life of me remember what it is... but reputedly it's common and a worthy mod... go forth!

Problems with the emulsion tubes in the carbs? This bike has FCR flatslides fitted so I'm guessing it shouldn't be a problem :rockon:

[imdying]

No, was something like air getting in during riding in a cross wind or something equally weird. Was something I'd not heard of being a problem before... wish I'd drunk less and paid more attention to the conversation now.

[NZsarge]

Described by some as "The thinking mans R1".


I don't know who "some" are but it's the FZ1/FZ1 Fazer that's usually refered to as the "the thinking mans R1". I think you'll find the TRX850 is usually refered to as "a poor mans Ducati". Not my cuppa tea but apparently a highly under rated bike. Much like the TDM 850/900.

[SPman]

Where's Mr Deuce?

[R6_kid]

He suggested the M1/M3 to match up with the front that is currently on the bike.

[bsasuper]

Fun when on the gas, but hard braking has the back locking up and skipping all over the place

[Chrislost]

Fun when on the gas, but hard braking has the back locking up and skipping all over the place

I thought thats what told you, you were braking hard enough?

the trick is to put it down 2 gears while its sliding to extend the drift to the apex

[R6_kid]

the trick is to put it down 2 gears while its sliding to extend the drift to the apex

And then get on the gas to hold it all the way to the next corner :wari:

[FROSTY]

I thought thats what told you, you were braking hard enough?

the trick is to put it down 2 gears while its sliding to extend the drift to the apex
except when its drifting the arse exiting the corner.
Seriously mate they get a bit arse happy if you're used to a lil revvy 4 cylinder.I gotta say I really wish I hadn't sold my one

[RDjase]

No, was something like air getting in during riding in a cross wind or something equally weird. Was something I'd not heard of being a problem before... wish I'd drunk less and paid more attention to the conversation now.

I remember getting told about that with the Duke monsters as well, i think if you take the snorkel out of the airbox it does it, I havnt done anything(except belts ,oils, and shims) to my one. I was going to buy a TRX but there wasnt any for sale at the time so i bought my Monster,

[imdying]

There was a Marlboro replica one built years ago that I saw in PB... looked super sweet :yes:

[jimbo]

Problems with the emulsion tubes in the carbs? This bike has FCR flatslides fitted so I'm guessing it shouldn't be a problem :rockon:

Is that the one from Welly mate? We have a Trx .Dont find it specially hard on tyres and it is punted along .Even with Fcrs your lookin aronnd 85 - 90 at the wheel.Ive read ya can get them over 100 RWHP with a big bore.All good usable power tho aint they.
Yes they do use oil,ours about 500 ml per 1000 Kms if ridden quick.Much more than that Id be looking for a reason,Tho it varies from bike to bike
Bit noisy in the timing chest area,Pennzoil shuts that up a bit if you can get it
Im sure the Ohlins will help wiv tyre wear :niceone: Has it got Gold v/v emulators,highly reccomend them Enjoy:clap::clap::clap:

[R6_kid]

Yeah mate, pearl white with a red frame, currently at Motomart waiting for me to pick it up.

A guy on the forum I visit is aiming for 125rwhp after a 907cc kit, adjustable race cam, FCR's, full race pipe and a lightened lightened crank.

From what I've been reading the bikes that use a fair bit of oil seem to have been run in lightly, the ones that were ridden hard from day one don't seem to use any! I think the problem is something to do with the factory piston rings not being a very good fit - something that was later sorted out, but most people seem to get around the problem by putting in a big bore kit! I've heard of people using up to 1L per 1000km! Whereas others are down around the 50-100mL mark.

The power delivery was what took me by surprise - torque like a twin, but far more rev-happy. I also like the looks, and it handles pretty sweet with the Ohlins in the rear. Not sure on emulators, but James Deuce took it for a spin and he said it probably does - I'm going to do a 'running gear service' soon and will do all the wheel/swingarm/steering head bearings and will check the forks out at the same time. It need's to be resprung front and rear as I'm probably just short of 110kg with my gear on.

I'm looking forward to picking it up, to bad I have work this weekend otherwise I'd be down there already!!!

[Robert Taylor]

Fun when on the gas, but hard braking has the back locking up and skipping all over the place

Thats because of the damper rod forks that give the bike little braking pitch control.

[Devil]

Dont bother with the M1, it's an out of date tyre. If you want metzeler, go for the M3. I'd recommend the BT016's however their grip when cold is lacking, but fantastic otherwise.

[Devil]

Of course a Pilot Road 2 is always a good option.

[Morcs]

Second the PR2, with a 2ctPP on the front.

Gareth dont both spending any money for increased power - otherwise youd be better off buying a TLS and spending money on its suspension.

From my experiences with riding a few TRXs, the brakes arent fantastic, but with a wee overhaul and braided lines they improve a lot.

Get the suspensions setup reasonably well (they are actually quite nice handling when they have a bit of wallow to them), and see if you can source a dynojet kit for it.

[R6_kid]

Heh, the only way I'm going to get more power out of this bike is to get a big bore kit or turbo it.

In terms of 'power upgrades' it has 41mm Keihin FCR Flatslide Carbs, a race cam, and a full 2-1 race system. Also has an Over Racing CDI which includes a TRE, and also takes the rev limit up to 10,000 (from 8,500).

It's got a full ohlins rear shock, and presumably emulators and different springs in the front. Brake wise it has Lockheed AP Racing calipers and a matching master cylinder gripping full floating cast iron discs (that actually float properly!). Braided lines all round too.

It goes, turns and stops really well. The only thing I need to improve are the tyres and myself. Got a set of SuperCorsa Pro's on the way, and will be saving up for some 'sports' tyres to go on after they are done.

I'm also on a weight loss plan, so that should help me free up some HP as welll!!!

[Morcs]

Heh, the only way I'm going to get more power out of this bike is to get a big bore kit or turbo it.

In terms of 'power upgrades' it has 41mm Keihin FCR Flatslide Carbs, a race cam, and a full 2-1 race system. Also has an Over Racing CDI which includes a TRE, and also takes the rev limit up to 10,000 (from 8,500).

It's got a full ohlins rear shock, and presumably emulators and different springs in the front. Brake wise it has Lockheed AP Racing calipers and a matching master cylinder gripping full floating cast iron discs (that actually float properly!). Braided lines all round too.

It goes, turns and stops really well. The only thing I need to improve are the tyres and myself. Got a set of SuperCorsa Pro's on the way, and will be saving up for some 'sports' tyres to go on after they are done.

I'm also on a weight loss plan, so that should help me free up some HP as welll!!!

Sounds pretty sorted.
Dyno?

[R6_kid]

Sounds pretty sorted.
Dyno?

That's 'cause it is! No dyno yet. May get the treatment soon - once the airbox arrives.

[jimbo]

Do you need a standard air box to drill and play wiv mate? Have a TRX we are about to part out.PM me If Ya Do

[p.dath]

Sorry to dregde up an old thread ...

I have a friend '95 Yamaha TRX850 that has a speed limiter on it. Any ideas on how to get rid of it?

[James Deuce]

Yes, and I have the documentation for it, but it means losing the sidestand cut out. Which is more important? Breaking the law infrequently or falling off because the sidestand is down?

[p.dath]

Yes, and I have the documentation for it, but it means losing the sidestand cut out. Which is more important? Breaking the law infrequently or falling off because the sidestand is down?

I was kinda hoping for a "cut this wire", "install this resister", or something like that.

My friend was wanting to go to a track day, and hence desired to loose the speed limiter (legal fun!). But I'm pretty sure he would rather have the side stand!

[James Deuce]

It is a "cut this wire" trick, but it removes the side stand cut out switch function.

[p.dath]

It is a "cut this wire" trick, but it removes the side stand cut out switch function.

With the limiter removed, do you know what someone could expect the top speed to be? Just a little bit more, like 200km/h, or is it capable of a lot more?

[James Deuce]

They run out of revs at 210. 5 speed box and a hard limiter.

[george formby]

TDM's/TRX's, like buse's. Nothing on this forum for ages, then 2 threads in one day.:lol:

[R6_kid]

My bike is far from standard other than the gearing via the sprockets.

At the end of the day the 5 speed box is the single biggest limiting factor.

My bike has flat slides, full pipe, race cam (?), racing CDI and a whole raft of light weight stuff.

The most I've seen is 215 on the speedo, I've got a 300kmh speedo and a 120/70 front tyre, which based on other peoples calculations means that my speedo is 'accurate'.

The best thing he can do is learn to get on the gas early, as that is what TRX's are good at. Lay down the torque ASAP and pass other bikes before they get on the gas!!!

[Hinny]

With the limiter removed, do you know what someone could expect the top speed to be? Just a little bit more, like 200km/h, or is it capable of a lot more?
240kph :rolleyes: