Supercharger weight difference

[tompat]

The Supercharger GH has a Gross vehicle weight rating of 160 kg while the GT and GX has 140 kg.
Why the difference? It is essentially the same components on the bikes. Same frame, fork, rims, both the GT and GH have the same tires. All three bikes can have dual batteries. I cannot see what the GH differs on that makes it more capable of carrying a heavy load.

 

[Chris Nolte]

The Supercharger GH has a Gross vehicle weight rating of 160 kg while the GT and GX has 140 kg.
Why the difference? It is essentially the same components on the bikes. Same frame, fork, rims, both the GT and GH have the same tires. All three bikes can have dual batteries. I cannot see what the GH differs on that makes it more capable of carrying a heavy load.

The weight rating on these bikes is determined by the part which has the lowest rating. In this case the slight difference is the stem, handlebars, saddle, seatpost and pedals. The frame is the same.

All of these parts can be swapped in theory to make the same weight rating, but I don’t make that statement for R&M and I think it would be difficult for them to certify a bike in that way since all of their bikes are certified individually with the parts spec’d. This is a EU requirement, but they keep this same standard in the US despite the fact it’s not required here.

A good way to understand this is to review the Ergotec website. Ergotec makes the stems and handlebars for most of their bikes and they have a pantented safety system which they developed to clarify the weight rating use for each part. You’ll can also see that there is a different rating for city riding and trail riding.

The ratings go from 1-6 and Ebikes use 4-6. R&M uses 5 and 6 only but 6 on the GH bikes.

https://www.ergotec.de/en/safety-level-33.html

 

[webcurl]

The weight rating on these bikes is determined by the part which has the lowest rating. In this case the slight difference is the stem, handlebars, saddle, seatpost and pedals. The frame is the same.

All of these parts can be swapped in theory to make the same weight rating, but I don’t make that statement for R&M and I think it would be difficult for them to certify a bike in that way since all of their bikes are certified individually with the parts spec’d. This is a EU requirement, but they keep this same standard in the US despite the fact it’s not required here.

A good way to understand this is to review the Ergotec website. Ergotec makes the stems and handlebars for most of their bikes and they have a pantented safety system which they developed to clarify the weight rating use for each part. You’ll can also see that there is a different rating for city riding and trail riding.

The ratings go from 1-6 and Ebikes use 4-6. R&M uses 5 and 6 only but 6 on the GH bikes.

https://www.ergotec.de/en/safety-level-33.html

You're right, must be mainly the stem, handlebars and saddle (seat if you're from Oz , could be a safe figure for E45?
The Rock Razor's are each rated for 115kg and Moto-X's rated for 145kg! But with weight distributed between front & rear, this becomes less of an issue.
I've now got a Marathon Plus MTB (125kg, 57mm) on front and a Marathon Mondial (130kg, 50mm, supposed to be to narrow for 40mm Rim) on rear and they're working nicely on my Supercharger GX.