Anyone heard from Trojan-Horse Racing - Adrenalin Moto -Twinshack

[unionthug]

For what it is worth I heard from Matt Purdy at Trojan Horse. I see he chimed in, good for him. I see it was his first post...

Interesting I see it was his first visit here. I am not here a lot and I am critical of people who are but I wonder why he isn't a sponsor of the site. Maybe he'll be back.

In an email I received overnight he claims he tried to contact me "several times". Funny the only one I received was after I sent him a 5th email linking him to this thread so I am afraid I have to call BS.

I'm glad he finally replied and I am glad he is still in business but the Buell universise is far too small to bull$hit people and hope to get by. For what it is worth the tensioner he sent me is a work of art and looks like it will be perfect.

Mark from Solo Buell has a few tensioners in stock and can get them in 8 days from Free Spitits. Unless I miss my guess that is what Matt did or at least the timeline works out that way. Maybe a sign on the page you order from that says it will take 4-6 weeks to get would be helpful.

With luck I will have some time this week to put it on and report back.

 

[konarider94]

When the suspension is completely unloaded, such as when pulling stoppies or even braking hard, the tension is increased to an alarming degree, which can actually damage belts, wheel bearings and pulley bearings.

In engineering you avoid making vauge comments like that. How much is alarming? I have a hard time believing that the tension from the weight of the unsprung components put more of a stress on the belt and bearings than the system experiences with hard acceleration. I jump my buell once and a while, but I know for a fact I accelerate way more often than my rear tire leaves the ground.

 

[anrkizm95]

You would need to contact free spirits for that info kona that was copied and pasted from their site.when accelerate your compressing the rear and taking load off the belt during braking its the opposite effect I have no idea of the actual numbers but you can feel the difference.

 

[dave_xb12r]

when accelerate your compressing the rear and taking load off the belt

You're right, and tires have maximum load when they are off the ground too. [confused]

I completely agree with kona

 

[konarider94]

when accelerate your compressing the rear and taking load off the belt

do you understand that torque generated from the engine has to get transferred through the belt in tension? you are telling me that an unsupported rear wheel has more tension on the belt than the belt of an accelerating motorcycle.

 

[browland]

I remember reading somewhere that the tensioner reduced some of the tension taking a bit of pressure off of something or another which in turn reduced some of the low gear clunkiness of shifting... any truth to this.. thinking about it, it doesn't seem too logical but I figure I would ask[confused]

oh and too the removing tension/adding tension in acceleration/deceleration... it seems that with the tensioner pulley located under the belt the harder you accelerate and compress the rear shock the less the belt would be pushing down on the tensioner pulley removing belt tention, and like wise in deceleration as the compression on the shock is decreased shock is allowed to expand it would force the rear tire and thus the belt down harder on the tensioner pulley[confused] ... so if you were in a stopie the shock would be fully decompressed pushing the swingarm/frame angle larger. Since the pully is under the belt and stationary the pressure the shock would exert on the belt would be at its greatest?

 

[konarider94]

it could take some of the static load off the belt or "preload" if you would like to call it that. i have a hard time believing that would lead to smoother shifting or any other benefit. the drive pulley is constrained by a bearing, any additional belt tension will be transferred into the case through that bearing, i cant see how any load caused by an increase in belt tension could make its way back to the shifting mechanism.

you are correct that under acceleration it will reduce the load on the tensioner pulley, but the top of the belt will be under a lot of tension and it will put more load into the axle and drive pulley bearing. so tensioner bearing may last longer, big whoop. i still stand by my assumption that tension in belt under load(acceleration) is greater than tension of belt of unsupported swingarm.

 

[anrkizm95]

You're right, and tires have maximum load when they are off the ground too.

I completely agree with kona

go out and look at your bike so you can get an idea of how it works. better yet put some weight on the rear and watch the belt loosen.now lift the back up and watch it tighten.also if you pay close attention you will notice the tensioner takes most of the load.
engine load does not increase the or decrease the distance between the pullys like suspension movement.
if this dosnt make any sense look at a drive shaft on a rear wheel drive vechicle lift the vechicle up drive shaft moves away from trans lower it it moves towards the trans.rear suspension up belt gets tighter down loose up tight down loose


engine load probably does put a lot of force on the belt but it also compresses the suspension because weight is transfered to the rear of the bike this may equal out i dont know with out testing.heavy braking or stoppies the front compresses and the rear lifts weight is transfered to the front of the bike putting more stress on the belt because the rear pully is trying to move away from the front pully.how much stress i dont know with out testing.if anyone has tested this and has data not opinions that contradict free spirits please post it we would all like to know what is best for our bikes.

 

[dave_xb12r]

go out and look at your bike so you can get an idea of how it works. better yet put some weight on the rear and watch the belt loosen.now lift the back up and watch it tighten.also if you pay close attention you will notice the tensioner takes most of the load.
engine load does not increase the or decrease the distance between the pullys like suspension movement.
if this dosnt make any sense look at a drive shaft on a rear wheel drive vechicle lift the vechicle up drive shaft moves away from trans lower it it moves towards the trans.rear suspension up belt gets tighter down loose up tight down loose

I know exactly how it works, and I know that the stress that stretches the belt under acceleration is very similar to the stress that derives from a fully extended rear shock.

 

[anrkizm95]

you know or think.how much load on acceleration and of that load how much is taken up by the suspension compressing?

nothing personal but im going to take companys like free spirits,twin motorcycles and others word over opinions on a forum

 

[dave_xb12r]

When do belts break? On the stand or during acceleration?

 

[anrkizm95]

belt isnt moving on a stand

but if your saying only when they move the free spirits tensioner would absorb tension both ways so i guess its good for heavy braking and hard accel

 

[dave_xb12r]

There is no way would absorb tension from accelerating.

 

[dave_xb12r]

The bottom side is the loose end. The belt is pulled from the top, therefor the tension is at the top.

 

[anrkizm95]

[confused] pressure put on the belt from the engine would would put pressure on the only part that gives that is the spring on the tensioner.look at the tensioner on you car engine

 

[dave_xb12r]

[confused] is right....

 

[anrkizm95]

The bottom side is the loose end. The belt is pulled from the top, therefor the tension is at the top.

if you look at the way the belt rides on this pully you will see it is always under tension and never loose

 

[dave_xb12r]

lets see that same pic with you sitting on the bike.

 

[anrkizm95]

do you understand that torque generated from the engine has to get transferred through the belt in tension? you are telling me that an unsupported rear wheel has more tension on the belt than the belt of an accelerating motorcycle.

yes i do understand that.and no im not saying it has any more or less i dont have any data do you.are you saying that it does and that when the suspension compresses it dosnt absorb some of that or that a spring tensioner dosnt?

 

[anrkizm95]

lets see that same pic with you sitting on the bike.

[confused] why the belt would be in the same spot just the tension would change.but if you want you can