Goat bikes!

[trickletreat]

I asked on here recently about the Gruber assist, well Steve at electricmountainbikes.com, who I bought my bike from, has installed one in his new bike brand...electricgoatbikes. He is taking it to Presteigne, so hoping to get one fitted to my wife's mtb if the test ride is okay.
Heres a link to some youtube footage of his stand at the Dalby forest world championships.

YouTube - Electric Goat Bikes Presents The Forest Gluider at the UCI MTB World Cup Dalby Forest

 

[matt-derby]

mmmmmmm

I'm looking forward to seeing this at Presteigne!!

 

[matt-derby]

this one looks good too!

Battery in back-pack I assume, similar to the Paratrooper bike.

 

[trickletreat]

Battery in back-pack I assume, similar to the Paratrooper bike.

I don,t think Steve will let you take this one up the hill in the woods...it was steep wasn't it!

 

[Old Timer]

Maybe I`m missing something but how the hell can that small battery/motor combo really be any good? I`ll stand corrected if proved wrong.

 

[NRG]

I think the idea Dave is for it to only be used when you really really need it...at all other times you ride it as if it where a normal bike.

I'm more intrigued about how the motor integrates into the frame and drives the bottom crank....

 

[Patrick]

I'm more intrigued about how the motor integrates into the frame and drives the bottom crank....

This should satisfy your curiosity

Gruber Antrieb - Gruber Assist - Fahrradantriebe » technology

 

[trickletreat]

Maybe I`m missing something but how the hell can that small battery/motor combo really be any good? I`ll stand corrected if proved wrong.

I will be trying it out at the weekend. I am used to a Heinzmann 53Nm motor, so worlds apart, but it is aimed at a relatively fit cyclist to give a boost. Steve from electricmountainbikes.com is used to riding all sorts of conversions round Dalby forest and North York Moors, and he was impressed by the power delivery at any speed in any gear. He also was surprised by the range.
I will let you know how I get on, it is for my wife's bike if it is suitable, so she is the one who has to be impressed.

Nigel

 

[NRG]

This should satisfy your curiosity

Gruber Antrieb - Gruber Assist - Fahrradantriebe » technology

Thanks Patrick, very interesting! I wonder how much......

 

[trickletreat]

Thanks Patrick, very interesting! I wonder how much......

The price for kit and installation is at the bottom of this link...

ElectricMountainBikes.com: Gruber Assist

 

[NRG]

That is just simply outrageous.....Dim....

 

[eddieo]

£1800....funny guy!

 

[flecc]

Especially when the net power at the back wheel is "up to" 100 watts. Small bevel drives are quite inefficient, and the motor's 200 watts quoted is gross, so much of the time the assistance will be very low, about a third or less of what we are used to on e-bikes.

Not surprising given the tiny diameter of that motor.
.

 

[eddieo]

gets funnier by the minute......

 

[NRG]

Especially when the net power at the back wheel is "up to" 100 watts. Small bevel drives are quite inefficient, and the motor's 200 watts quoted is gross, so much of the time the assistance will be very low, about a third or less of what we are used to on e-bikes.

Not surprising given the tiny diameter of that motor.
.

Yes, should have realised when he demonstrated that he could stop the crank turning with his hand in the video......oh well, cross that one off the list

 

[flecc]

Clever idea though, and very attractive for anyone in fairly easy territory who only needs a little bit of occasional assistance.

In the "stealth" stakes, if the Cytronex is for the reasonable fit, as it is, the Gruber is for those rich people just short of very fit who want to perform as if very fit.
.

 

[trickletreat]

Well hopefully able to give an informed real life opinion after the weekend. Steves pricing is dictated by the Gruber pricing and current exchange rate I think....most kits coming from Europe are now expensive.

 

[eddieo]

Well hopefully able to give an informed real life opinion after the weekend. Steves pricing is dictated by the Gruber pricing and current exchange rate I think....most kits coming from Europe are now expensive.

Ths is simply ridiculous.......for the same money you could have a BionX 250 watt HT (high torque) probably the best and most expensive kit available...more obvious an e bike but come on what is wrong with that! lol

 

[flecc]

Well hopefully able to give an informed real life opinion after the weekend. Steves pricing is dictated by the Gruber pricing and current exchange rate I think....most kits coming from Europe are now expensive.

As you say, European prices are high and anyway, a small production unit which uses unique high precision parts will inevitably be expensive.

However, we have discussed this unit previously, the link below is from one of those discussions in September 2007, so at 2.5 years ago, far from new and it hasn't exactly won over the market which is the final opinion arbiter.

Gruberassist
.

 

[trickletreat]

As you say, European prices are high and anyway, a small production unit which uses unique high precision parts will inevitably be expensive.

However, we have discussed this unit previously, the link below is from one of those discussions in September 2007, so at 2.5 years ago, far from new and it hasn't exactly won over the market which is the final opinion arbiter.

Gruberassist
.

This is a very small market, so at the price point of these higher end units, few people will have tried them, I prefer to try before making my mind up...you pays your money...