jreilly Posted July 8, 2015 Report Share Posted July 8, 2015 Son is riding international class and bike needs to weigh 154lbs.Specs say 146 dry wt.Has anyone no what wt bike is with gas and oil.Not a real easy way to get this figured out.And what material do all use and where to put on bike.Seems down low by engine sump guard most likely.Any Ideas? Thanks JR Quote Link to comment Share on other sites More sharing options...
faussy Posted July 8, 2015 Report Share Posted July 8, 2015 (edited) Oil density = 0.9kg/l Petrol density = 0.74kg/l 500cc gearbox oil + 2.5 litre petrol = 0.45+1.85 = 2.3kg ~ 5lbs Does dry weight include radiator fluid?? Id say lead weights (wheel rim weights) stuck somewhere. PS Get the bathroom scales out Edited July 8, 2015 by faussy Quote Link to comment Share on other sites More sharing options...
crazybond700 Posted July 8, 2015 Report Share Posted July 8, 2015 (edited) Wheels turn so add ''more'' weight during riding. better to put it somewhere which is absorbed by the suspension, and central. So I would put some lead near the engine plate. Thats also what the pros would do. Edited July 8, 2015 by crazybond700 Quote Link to comment Share on other sites More sharing options...
jrsunt Posted July 8, 2015 Report Share Posted July 8, 2015 Weigh each wheel on the bathroom scales. Try locate some old lead, possibly from a local builder, offer him some money as its worth £1 per kilo in scrap. You can then smelt it back down into casted shapes to fit neatly in the sump guard. Dont breath in the fumes though! Quote Link to comment Share on other sites More sharing options...
dan williams Posted July 8, 2015 Report Share Posted July 8, 2015 Odds are good your bike is OK as is unless it's loaded with titanium widgets. Weigh it and see. Data from the factories is notoriously optimistic. Quote Link to comment Share on other sites More sharing options...
dan williams Posted July 8, 2015 Report Share Posted July 8, 2015 I couldn't find FIM tech procedures for trials but the AMA/FIM Motocross procedures say fuel must be drained. Quote Link to comment Share on other sites More sharing options...
lineaway Posted July 9, 2015 Report Share Posted July 9, 2015 I would not worry until tech inspect. Quote Link to comment Share on other sites More sharing options...
motomofo1 Posted July 9, 2015 Report Share Posted July 9, 2015 (edited) I dont think a Beta actually weighs 146 lbs. I think you'll be fine. Edited July 9, 2015 by motomofo1 Quote Link to comment Share on other sites More sharing options...
jreilly Posted July 9, 2015 Author Report Share Posted July 9, 2015 Yes fuel must be drained.Put my 2012 bike on scale with half tank fuel wt 149.Lead is what I figured just have to shape for sticking in bash plate area.Seems a bit of a silly rule but what do I no. JR Quote Link to comment Share on other sites More sharing options...
dan williams Posted July 9, 2015 Report Share Posted July 9, 2015 Yeah it is a silly rule but one Honda can live with. The other way to control hyper trick factory bikes is with a claiming rule and the factories are a lot less happy with that idea. Quote Link to comment Share on other sites More sharing options...
dan williams Posted July 10, 2015 Report Share Posted July 10, 2015 When you think about it it is really ironic. The whole logic for weight rules were to prevent the factories from buiding one of a kind machines with exotic materials that provided an advantage over the production bikes. Now the production bikes from "most" manufacturers are below the weight limits and will stay that way because that is what the customers will buy. All except for Honda. When a rule is put in place to protect the interests of one rider or manufacturer it's a bad rule. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted July 11, 2015 Report Share Posted July 11, 2015 When you think about it it is really ironic. The whole logic for weight rules were to prevent the factories from buiding one of a kind machines with exotic materials that provided an advantage over the production bikes. Now the production bikes from "most" manufacturers are below the weight limits and will stay that way because that is what the customers will buy. All except for Honda. When a rule is put in place to protect the interests of one rider or manufacturer it's a bad rule. A bad rule is worse when a) its not policed and everyone knows when the bikes will be weighed. Put lead in the airbox for tech inspection, job done. Quote Link to comment Share on other sites More sharing options...
dan williams Posted July 11, 2015 Report Share Posted July 11, 2015 Used to be the same way with the sound check. Stuff steel wool into the pipe, ride gingerly to tech, ride back at full throttle to blow out steel wool. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted July 12, 2015 Report Share Posted July 12, 2015 You cant teach the Americans much. Except world geography? Quote Link to comment Share on other sites More sharing options...
dan williams Posted July 15, 2015 Report Share Posted July 15, 2015 True, we know how to use an apostrophe. Well some of us do. OK, I do. Dabster, You must have gone to the Jeremy Clarkson school of " 'murican " hating. 1 Quote Link to comment Share on other sites More sharing options...
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