The Spares Company
Club Shop/Regalia
Parent Website
Contact Officials
Machine Registrar
Club Secretary
Membership Secretaries
MPH Editor and Forum Administrator.
Section Newsletters
Technical Databases
Photos
Home
What's new
Latest activity
Forums
New posts
What's new
New posts
Latest activity
Information
Bike Modifications
Machine Data Services
Manufacturers Manuals
Spare Parts Listings
Technical Diagrams
Whitakerpedia (Vincent Wiki)
The Club
MPH Material Archive
Flogger's Corner
Obituaries
VOC Sections
Local Sections
Local Section Newsletters
Miscellaneous
Club Assets
Club History
Club Rules
Machine Data Services
Meeting Documents
Miscellaneous
Essential Reading
Magazine/Newspaper Articles/Letters
Adverts and Sales Brochures
The Mighty Garage Videos
Bikes For Sale (Spares Company)
Log in
Register
What's new
New posts
Menu
Log in
Register
Install the app
Install
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Make your own Generator
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="oexing" data-source="post: 108315" data-attributes="member: 1493"><p>Well, when looking at your test findings I´d think your strategy on motor choice was not optimal. See my tests above, I get about 14 V at 2050 rpm crank speed. And this with motors of 24 V type at 3000 rpm in the descriptions. My thinking was you might arrive at 14 V with a nominal 24 V motor at lower speeds than with a proper 12 V type. So I am very curious to get the new 48 V motor in a few weeks for tests. I am expecting 14 V with it at even lower speeds. </p><p> My test setup had no converter included, just a three phase rectifier for the brushless as you cannot connect all phases to one single wire. You can drive a bulb with one phase of course, AC power in that case. And from this you can guess what power to expect with all phases but then my tests appear good enough for me to have an idea about performance on the bike, a connected battery will most likely not have a bad effect at all. From above a certain motor speed at 14 V you´d need a step-DOWN converter to limit the system to max. 14 V when picking a 24 V or 48 V type. So really I cannot see a problem to keep the battery charged when having a stepdown converter in the setup. </p><p> The present Alton type has no longer any gears in it to get higher speeds for the rotor like in the older type - as far as I have learned. So in consequence they must have changed the diameter of the rotor to a smaller size to keep the radial offset of the shaft for simple installation, no machining required. Nobody here who could point me to performance numbers at various speeds with these ? </p><p> I only came to looking for alternatives because I just would not accept any noisy gear drive in Altons then - which did not prove to be very durable - or so I found in this forum somewhere. So to this day for lack of info about performance of the present Alton it seems to me a modification plus some minor machining for the China brushless types may be very worthwhile to do. At least all tests appear to be better than what I know about Altons. </p><p></p><p> Vic</p></blockquote><p></p>
[QUOTE="oexing, post: 108315, member: 1493"] Well, when looking at your test findings I´d think your strategy on motor choice was not optimal. See my tests above, I get about 14 V at 2050 rpm crank speed. And this with motors of 24 V type at 3000 rpm in the descriptions. My thinking was you might arrive at 14 V with a nominal 24 V motor at lower speeds than with a proper 12 V type. So I am very curious to get the new 48 V motor in a few weeks for tests. I am expecting 14 V with it at even lower speeds. My test setup had no converter included, just a three phase rectifier for the brushless as you cannot connect all phases to one single wire. You can drive a bulb with one phase of course, AC power in that case. And from this you can guess what power to expect with all phases but then my tests appear good enough for me to have an idea about performance on the bike, a connected battery will most likely not have a bad effect at all. From above a certain motor speed at 14 V you´d need a step-DOWN converter to limit the system to max. 14 V when picking a 24 V or 48 V type. So really I cannot see a problem to keep the battery charged when having a stepdown converter in the setup. The present Alton type has no longer any gears in it to get higher speeds for the rotor like in the older type - as far as I have learned. So in consequence they must have changed the diameter of the rotor to a smaller size to keep the radial offset of the shaft for simple installation, no machining required. Nobody here who could point me to performance numbers at various speeds with these ? I only came to looking for alternatives because I just would not accept any noisy gear drive in Altons then - which did not prove to be very durable - or so I found in this forum somewhere. So to this day for lack of info about performance of the present Alton it seems to me a modification plus some minor machining for the China brushless types may be very worthwhile to do. At least all tests appear to be better than what I know about Altons. Vic [/QUOTE]
Insert quotes…
Verification
The Series 'A' Rapide was known as the '********' Nightmare?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Make your own Generator
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top